Nut lock



lsuch contact the Patented Apr. 12, Y1927. i i i l p y Unirse-STATESPire-Nr .BRT SALE, 'or RIVERSIDE, CAIJIFORNIA'.

Lezama ric NUT Loox; v

Applicationifled August 7, 1926. Serial'No. 127,884.

n "Ihe object of this invention is the provision of a simple means foreffectively holding a nut locked on a bolt.

An object is the provision of a nut lock,- ing means, in which a nutscrewed on a bolt, is formed With openings for the reception therein ofheaded and pointed pins, the heads of which pins are designed forcontacting engagement with a cap nut which is screwed on the main nut,and by virtue of pointed ends of the pins will engage with and distort'the threads of the bolt so that the nut cannot be accidentallyunscrewed from the bolt, there being means for holding the cap nut onthe main nut. v

To thev attainment of the foregoing, .the improvement resides .in theconstruction,

` combination and operative association of a shank lextension which of abolt.

parts suoli as is disclosed by the drawings which accompany and formpart of this application.

In ,the drawings:

yFigure 1 is a plan view of a nut and b olt looked together inaccordance with this invention.

Figure 2 is an end view thereof.l Y

Figure 3 is a side elevation illustrating the main elements oftheimprovement disassociated. y

Figure 4 is a detail sectional view approximately on the line 4 4 ofFigure 1.

Figure 5 is a View similar to Figure 4 but showing the cap nut screwedoff' vthe headed ins. n p Figure 6 is a sectional view approximately onthe line 6-6 of Figure 1. p

Figure 7 is a plan view of one of the pins.

Referring now to the drawings in detail, the numeral l designates thethreaded shank Screwed on this shank there is ay nut 2. In the showingof the drawings, the nut includes a headed portion 3 having isexteriorly threaded and which is indicated by the numeral 4. The shank 4has its outer end provided with an annular groove 5, and the said shank,adjacent to the head 3 thereof, is provided with radially disposedequidistantly spaced openings that, of course, communicate with itsthreaded bore. Designed to be received in each of the openings 6 of theexterior threaded portion of the nut 3 there is a pin 7 The pin has oneof its ends pointed, as at 8, and its opposite end headed, as at 9.Screwed on the threaded shank 4 `of' the 'nut 3 there is a member whichI will term a cap nut and which is indicated by the numeral 10. The capnuthasits outer facevcut angularly'to provide wrench holes and its'innerface is flared, as at 11, inwardly to its threaded bore. Theiiared'portion l1 is designed to receive therein thel rounded head 9 of the pin7, and when the cap nut 10 is screwed by a vwrench over the threads 4 ofthe nut 3 the flared or concaved wall l1L contacting with the heads ofthe pins.`

7 will force the pointed ends 8 thereof into biting engagement with thethreads on the nut l0, distorting such threads so that the accidental orfree `turning of the nut 2 on the bolt l in either direction will bethus prevented.

In order to associate the cap nut 10 with the nut 2' I arrange in thegroove 5 a split ring member 12. If desired, and as disclosed bythedotted lines inFigure 1 of the drawings, vone end Vof the splitring12 may beoffset, as at 13, and from thence ycontinued to provide aninner and enlarged convolution l14 and this convolution may contactwith*v thepouter end of the capl nut 10 and hold the same over vand incontacting engagement with the heads 9 of the pins 7.

While I have illustrated a satisfactory embodiment of my improved devicemy features of inventionv arecapable of extended application and I donot wish to be limited to the' specific structure herein shown andd-escribed. v I-Iaving claim l. 'Ilie combination, a bolt, a nut screweddescribed the i-invention, I

thereon, said nut having an outer threaded portion provided'with aseries of radially disposed openings that communicate with its bore andhaving an annular depression at its outer end, an inner pointed end andan outer headed end, one of which being received in each of thementioned openings, a cap nut screwed von the exteriorly threadedportion of the pins, each of which having first mentioned nut having itsbore flared* at one end, for frictional contact with the heads lof thethrough the openings to cause the pointed ends thereof to bit-e anddistort the threads of the bolt and a ring member seated in the grooveof the first mentioned nut for holdingthe cap nut thereon.

2. The combinatioma bolt, a nut screwedthereon, said nut having anlouter threaded pins for forcing said pins l end, for friotional ContactWithl the heads of the pins for forcing said pins through the openingsto Cause the pointed ends thereof to bite and distort the threads of thebolt.

In testimony whereof I aiX my signature.

BURT SALE.

